In the third instalment, Tom Rosenthal, Joel Fry and Ryan Sampson will return as much loved Marcus, Stylax and their feckless slave Grumio, alongside their regular nemeses Flavia (Doon Mackichan) and Landlord (Karl Theobald).

Keegan will play 'a brazen Vestal Virgin' in the ancient Rome based sitcom, according to the release.

For those not up on their knowledge of Ancient civilizations, Vestal Virgins were the priestesses of the Roman goddess of the hearth, Vesta, and took a vow of abstinence.

Speaking of the returning series, Tom Rosenthal, who plays Marcus, stated: "Plebs series three is the best thing to come out of Rome since the aqueduct, the arch or any of Stylax's other sex positions.”

Grumio actor Ryan Sampson added: “Yes, Plebs is back and bigger, weirder and more nakeder than ever before! It’s a real treat, with plenty of hilarity, cringe moments and a bit more insight into Grumio’s past.”

How will Keegan deal with that lot?

Are viewers ready to see another side of Michelle Keegan? (Image: Revlon/Splash News)